63319385 has 4 divisors (see below), whose sum is σ = 75983268. Its totient is φ = 50655504.

The previous prime is 63319363. The next prime is 63319393. The reversal of 63319385 is 58391336.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10843849 + 52475536 = 3293^2 + 7244^2 .

It is a cyclic number.

It is not a de Polignac number, because 63319385 - 2¹² = 63315289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6331934 + ... + 6331943.

It is an arithmetic number, because the mean of its divisors is an integer number (18995817).

Almost surely, 2^63319385 is an apocalyptic number.

It is an amenable number.

63319385 is a deficient number, since it is larger than the sum of its proper divisors (12663883).

63319385 is a wasteful number, since it uses less digits than its factorization.

63319385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12663882.

The product of its digits is 58320, while the sum is 38.

The square root of 63319385 is about 7957.3478621963. The cubic root of 63319385 is about 398.5769957336.

The spelling of 63319385 in words is "sixty-three million, three hundred nineteen thousand, three hundred eighty-five".